Air conditioner



FIG. 1 is a perspective view of an air conditioner, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is another perspective view thereof in an alternate configuration.

The broken lines illustrating portions of the air conditioner are for environmental purposes only and form no part of the claimed design. 

CLAIM I claim, the ornamental design for an air conditioner, as shown and described. 